<template>
  <div>
    <div>
      用任意方式, 求数组里每个学生的年龄和, 显示到页面上
    </div>
    年龄和：{{ ageSum }}
  </div>
</template>

<script>
export default {
  data() {
    return {
      arr: [
        {
          name: "小明",
          age: 18,
        },
        {
          name: "小花",
          age: 25,
        },
        {
          name: "小爱",
          age: 21,
        },
      ],
    };
  },
  computed: {
    ageSum() {
      return this.arr.reduce((sum, obj) => sum + obj.age, 0);
    },
  },
};
</script>

<style></style>
